Implement `find_countours`

[edgarriba]

references:
https://docs.opencv.org/4.x/d3/dc0/group__imgproc__shape.html#gadf1ad6a0b82947fa1fe3c3d497f260e0

[Udit-git-acc]

Is this issue resolved ?

[edgarriba]

@Udit-git-acc not yet, but please focus on finishing first other opened PRs first

[mathurojus]

Hi @edgarriba ,
I'd like to take this up. Familiar with the codebase and have reviewed the references. Ready to start whenever

[edgarriba]

which reference code are you planning to use?

[mathurojus]

Hi @edgarriba ,
I plan to use the aprilgrid-rs quad.rs implementation as the main code reference, and follow OpenCV’s findContours documentation for mode/method semantics and API behavior.
Should I start with the same approach ?